Lew Johnson wrote:That's not crazy slow.
There are a lot of factors so it's hard to know what you should be expecting. I'm also in a very different growing climate, 9b.
What kind of soil do you have? Has there been much rain? Full sun? Partial shade?
Take some pictures of the garden!
Full sun. I'd say average rain. Native soil is heavy clay but I've been improving by adding leaves for four years. The radish bed is freshly turned sod so is 100% native soil.
Pictures are from April 17.